Changes in plasma proenkephalin peptide F and catecholamine levels during graded exercise in men.
Changes in plasma proenkephalin peptide F and catecholamine levels during graded exercise in men.
复制标题
男性分级运动期间血浆脑啡肽原肽 F 和儿茶酚胺水平的变化。
DOI：
10.1073/pnas.82.18.6349
复制
发表时间：
1985
影响因子：
11.1
通讯作者：
Lewis,RV
中科院分区：
文献类型：
--
作者：
Kraemer,WJ;Noble,B;Culver,B;Lewis,RV
Proenkephalin peptide F immunoreactivity, epinephrine, and norepinephrine were measured in the plasma of endurance-trained and untrained male subjects riding on a bicycle ergometer at 28%, 54%, 83%, and 100% of maximum oxygen consumption (VO2). At rest the trained group had peptide F levels almost twice the level of the untrained group, whereas all other variables measured were the same. The maximum epinephrine and norepinephrine levels were found at 100% exercise intensity, with a precipitous drop in the levels at 5 min of recovery. In contrast, the peptide F immunoreactivity reached a maximum at 5 min of recovery and was still substantially above the initial level after 15 min of rest. In addition, the trained subjects showed another peak of peptide F immunoreactivity at 54% VO2max. Possible explanations for the different patterns of catecholamine and peptide F levels are presented.
